Auditing LLM Responses to Harmful Stereotypes Targeting Mental Health Groups

Arka Dutta, Rijul Magu, Sean Kim, Seohee Yoon, Munmun De Choudhury, Ashiqur R. KhudaBukhsh


Abstract
Large Language Models (LLMs) can exhibit imbalanced biases against vulnerable groups, but how they rationalize stereotypes and rights restrictions targeting mental health entities remains underexplored. We audit a broad suite of open-weight LLMs on stereotype-justification prompts tied to mental health identities. We find that several widely used models endorse harmful stereotypes when explicitly asked to justify them, with endorsement varying across model families, versions, and mental health conditions. Finally, we show that widely used harmful-content evaluation and moderation frameworks often miss these nuanced, discriminatory responses, highlighting a gap in current AI safety evaluation for mental health groups.
Anthology ID:
2026.findings-acl.2010
Volume:
Findings of the Association for Computational Linguistics: ACL 2026
Month:
July
Year:
2026
Address:
San Diego, California, United States
Editors:
Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
Venue:
Findings
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Publisher:
Association for Computational Linguistics
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Pages:
40435–40452
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URL:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.2010/
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Cite (ACL):
Arka Dutta, Rijul Magu, Sean Kim, Seohee Yoon, Munmun De Choudhury, and Ashiqur R. KhudaBukhsh. 2026. Auditing LLM Responses to Harmful Stereotypes Targeting Mental Health Groups. In Findings of the Association for Computational Linguistics: ACL 2026, pages 40435–40452, San Diego, California, United States. Association for Computational Linguistics.
Cite (Informal):
Auditing LLM Responses to Harmful Stereotypes Targeting Mental Health Groups (Dutta et al., Findings 2026)
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https://preview.aclanthology.org/ingest-acl/2026.findings-acl.2010.pdf
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